Among these solutions, only \(A_{4}\)  corresponds to a stable fixed-point[1]}. The
equations for \(\lambda _{\chi }\)  and \(\lambda _{\phi }\)  are symmetric, so
they enjoy the same value at criticality. We have solved the fixed-point
numerically, for instance for \(N_{f}=1\) , Eqs.(REF ) to () admit
an infrared stable fixed point:
\(X^{\ast }=(0.125\epsilon ,0.0281\epsilon ,0.0281\epsilon ,0.0346\epsilon ,0.0346\epsilon ),\) 
